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High precision current sensor Allegro ACS72981KLRATR-150B5 with digital temperature compensation and loss design

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High precision current sensor Allegro ACS72981KLRATR-150B5 with digital temperature compensation and loss design

working temperature : -40℃~+125℃

Current Range : 150A

Voltage - Supply : 4.5V~5.5V

Band Width : 250kHz

Response Time (tr) : 1.8us

Sensitivity : 13.33mV/A

Bidirectional Current Detection : Support

Description : 150A 13.33mV/A PSOF-7 Current Sensors RoHS

Mfr. Part # : ACS72981KLRATR-150B5

Model Number : ACS72981KLRATR-150B5

Package : PSOF-7

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Product Overview

The Allegro ACS72981 family of current sensor ICs offers economical and precise solutions for AC or DC current sensing. With a 250 kHz bandwidth, it is ideal for motor control, load detection and management, power supply and DC-to-DC converter control, and inverter control. Its <2 s response time enables overcurrent fault detection in safety-critical applications. The device utilizes a precision, low-offset linear Hall circuit with a proprietary digital temperature compensation technology for improved accuracy over temperature and lifetime. The internal resistance of the primary copper conduction path is 200 typical, ensuring low power loss and high power density. Differential sensing techniques minimize output disturbance from common-mode magnetic fields.

Product Attributes

Brand: Allegro
Certifications: AEC-Q100 automotive qualification
Material: Lead (Pb) free, 100% matte tin plating, no Pb inside package, oxygen-free copper leadframe.
Package: 7-pin PSOF package (suffix LR)

Technical Specifications

Specification	Value	Details/Notes
Product Family	ACS72981	High-Precision Linear Hall-Effect-Based Current Sensor IC
Bandwidth	250 kHz	Analog output
Response Time	< 2 s	Enables overcurrent fault detection
Primary Conductor Resistance	200 (typical)	Low power loss, high power density
Supply Voltage Options	3.3 V and 5 V	Nominal supply voltage
Noise Performance	Industry-leading	Through proprietary amplifier and filter design
Total Output Error	Greatly improved	Digitally programmed and compensated gain and offset
Zero Output Voltage Stability	Extremely stable over temperature and lifetime	Proprietary digital temperature compensation
Package	7-pin PSOF	Suffix LR
Absolute Maximum Supply Voltage (VCC)	6.5 V
Maximum Junction Temperature (TJ(max))	165 C
Operating Temperature Ranges	40 to 150 C (L)
	40 to 125 C (K)
	40 to 85 C (E)
Typical Overcurrent Capability (IPOC)	285 A	TA = 25C, 1 second on time
Typical Thermal Resistance (RJA)	18 C/W	Mounted on Allegro evaluation board
ESD Ratings (HBM)	12 kV	Per AEC-Q100
ESD Ratings (CDM)	1 kV	Per AEC-Q100
Pin 1 Description	VCC	Device power supply terminal
Pin 2 Description	GND	Device ground terminal
Pin 3 Description	VIOUT	Analog output signal
Pin 4 Description	NC	No connection; connect to GND for optimal ESD performance
Pin 5 Description	IP+	Positive terminal for current being sampled
Pin 6 Description	IP	Negative terminal for current being sampled
Pin 7 Description	NC	No connection; connect to GND for optimal ESD performance
Chopper Stabilization	Yes	Minimizes Hall offset, reduces thermal noise
Common Mode Rejection	Virtually eliminates output disturbance from common-mode magnetic fields	Differential sensing techniques
Selection Guide - Example Variants	ACS72981LLRATR-050B3	50 A, 26.4 mV/A, 3.3 V, 40 to 150 C
	ACS72981LLRATR-050B5	50 A, 40 mV/A, 5 V, 40 to 150 C
	ACS72981KLRATR-150B3	150 A, 8.8 mV/A, 3.3 V, 40 to 125 C
	ACS72981ELRATR-200B3	200 A, 6.6 mV/A, 3.3 V, 40 to 85 C
	ACS72981ELRATR-200B5	200 A, 10 mV/A, 5 V, 40 to 85 C

2506301206_ALLEGRO-ACS72981KLRATR-150B5_C3685716.pdf

High precision current sensor Allegro ACS72981KLRATR-150B5 with digital temperature compensation and loss design Images

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